Natural gas prices in 2016 were the lowest in nearly 20 years

Natural gas spot prices in 2016 averaged $2.49 per million British thermal units (MMBtu) at the national benchmark Henry Hub, the lowest annual average price since 1999. The monthly average price fell below $2.00/MMBtu from February through May, but later increased, ending the year at an average of $3.58/MMBtu in December.
Source: Today In Energy